Research project presentation on thermal and sound properties.pptx

Research format

1. Research project title: SOUND AND THERMAL PROOFING BY USE OF WASTE FILLER MATERIALS IN HOLLOW BLOCKS. By Reg. no Name EG206-103805-20 ALEXANDER WANYOIKE EG206-103800-20 SCOTT WAWERU M EG206-103829-20 KIRWA VINCENT EG206-103830-20 JOHNMARK MUREITHI

2. Title: Sound and thermal proofing by use of waste filler materials in hollow blocks. This research investigates the comparison of the utilization of sawdust, fabric and LPDE plastics As waste filler materials in hollow blocks for enhanced sound and thermal insulation in the construction industry.

3. Introduction Objectives Main objective Sound and thermal proofing by use of waste filler materials in hollow blocks. Specific objectives Identify and assess various waste filler materials and their potential in improving sound and thermal properties in hollow blocks. Evaluate the thermal insulation and sound proofing performance of different waste filler materials to validate their suitability in the construction industry. Conduct tests to evaluate the thermal insulation performance and sound proofing capabilities of the modified hollow blocks under controlled conditions.

4. Methodology Experimental set up The filler materials including fabric, LPDE plastics and saw dusts are acquired and processed for insertion into the hollow blocks Standard hollow blocks are chosen as the base or control material for experimentation, with each type of filler material used in separate blocks The control group is established using the unfilled hollow blocks to serve as the baseline Procedures to be employed The experimental procedure encompasses: Preparation of blocks , standardized sound insulation tests, and measurements of thermal properties A control group with traditional hollow blocks serves as a baseline for comparison Data collection which involves recording sound and thermal data for each sample in an experimental design table

5. Method of analysis Statistical analysis using SPSS is employed to compare the effectiveness of different filler material The recorded sound insulation and thermal properties data for each hollow block variant are subjected to statistical analysis using the SPSS software The analysis considers various factors, including frequency and decibel levels for sound insulation and temperature differentials and distribution patterns for thermal insulation The interpretation procedure encompasses: The results are interpreted in relation to the research objectives, and recommendations are made for practical applications and further research

6. Results and discussion The results are used to compare the performance of different filler materials in terms of thermal and sound insulation properties The data represents the results of thermal and sound tests conducted on hollow blocks made from various filler materials The table includes the serial number of the hollow blocks, the type of filler material used, the sample number, time (minutes), temperature in degrees Celsius, and the sound level in decibels (dB) both inside and outside the blocks

7. Test No./ No. Of hollow blocks Filler Materials Sample No. Time (s) Temperature °C Sound source Inside in decibels, dB Outside in decibel, dB 8 Control experiment 1 2 30.5 46.0 43.8 30.9 44.9 2 5 30.9 3 10 31.5 8 LPDE plastics 1 2 42.5 60.9 38.4 41.5 49.6 2 5 41.6 3 10 40.4 8 Sawdust 1 2 39.5 54.2 50.8 37.9 52.5 2 5 37.7 3 10 36.4 8 Fabric 1 2 31.3 56.7 39.8 31.2 48.25 2 5 31.2 3 10 31.1

8. Thermal and sound insulation Control Unit: Sample 1: Temperature = 30.5°C (2 minutes) Sample 2: Temperature = 30.9°C (5 minutes) Sample 3: Temperature = 31.5°C (10 minutes) Inside Sound Level: 46.0 dB Outside Sound Level: 43.8 dB Sawdust fillers Sample 1: Temperature = 31.5°C (2 minutes) Sample 2: Temperature = 37.7°C (5 minutes) Sample 3: Temperature = 36.4°C (10 minutes) Inside Sound Level: 54.2 dB Outside Sound Level: 50.8 dB

9. Rate of Temperature Increase The unit with sawdust filler material experienced a quicker rate of temperature increase than the control unit. This is demonstrated by the significant increase in temperature from 2 to 5 minutes for the unit containing sawdust. Maximum temperature achieved: After 5 minutes, the unit with sawdust had a higher maximum temperature (37.7°C) than the control unit (31.5°C ). The use of sawdust as a filler material appears to improve the thermal properties of the hollow blocks Sound transmission The sawdust-filled device has a greater variance in sound levels between indoor and outdoor measures than the control unit. This shows that sawdust filler material may have superior sound insulation properties than empty hollow blocks . The study suggests that sawdust-filled hollow blocks can reduce sound transmission more effectively than empty ones. This has the potential to reduce noise in building construction, especially in areas where sound insulation is sought.

10. LPDE plastics Sample 1: Temperature = 42.5°C (2 minutes) Sample 2: Temperature = 41.6°C (5 minutes) Sample 3: Temperature = 40.4°C (10 minutes ) Inside Sound Level: 60.9 dB Outside Sound Level: 38.4 dB Rate of temperature decrease The unit containing LDPE plastic filler material had a faster rate of temperature drop than the control unit. This is clear from the significant decrease in temperature from 2 to 5 minutes for the unit made of LDPE plastic Using LDPE plastic as a filler improves the thermal characteristics of hollow blocks, resulting in greater maximum temperatures Sound transmission The unit with LDPE filler material has a substantially larger differential in sound levels between inside and outside measures than the control unit. This shows that LDPE filler material has better sound insulation capabilities than empty hollow blocks.

11. Practical application The study suggests that LDPE-filled hollow blocks can significantly reduce sound transmission for noise reduction in building construction This is especially in regions where sound insulation is critical, such as residential neighborhoods near busy roads or industrial zones Fabric fillers Sample 1: Temperature = 31.3°C (2 minutes) Sample 2: Temperature = 31.2°C (5 minutes) Sample 3: Temperature = 31.1°C (10 minutes) Inside Sound Level: 56.7 dB Outside Sound Level: 39.8 dB Rate of temperature change Temperature fluctuations in both units are minor over time, suggesting that the fabric filler material has no major impact on the rate of temperature change compared to the control unit

12. Sound attenuation Fabric filler material significantly improves sound attenuation compared to the control unit The unit with fabric filler material has a larger difference in sound levels between inside and outside measures than the control unit This shows that cloth filler material has better sound insulation characteristics than empty hollow blocks. The study suggests that fabric-filled hollow blocks can reduce sound transmission more effectively than empty ones This has practical consequences for noise reduction in building construction, especially in regions where sound insulation is critical Overall, the inclusion of sawdust, fabric and LPDE plastics as a filler material appears to affect both the rate of temperature increase and the overall stability of temperature regulation in the hollow blocks, emphasizing the importance of filler materials in thermal characteristics. Again, the findings emphasize the relevance of filler materials in improving the sound insulation properties of hollow block structures While empty hollow blocks provide some sound mitigation, adding fabric filler material improves sound insulation characteristics, resulting in a more effective reduction in sound transmission This emphasizes the need of using proper filler materials to improve the acoustic performance of hollow block structures in a variety of applications

13. Time in mins Temp in degree celsius Figure 8: Thermal insulation line chart

14. Conclusion In terms of thermal performance , the use of filler materials such as sawdust, LDPE plastic, and fabric had an impact on the rate of temperature increase and overall temperature regulation stability Sawdust and cloth contributed to quick heat absorption while also improving heat dissipation over time, resulting in a more balanced temperature profile LDPE plastic initially enabled for rapid heat absorption but did not give long-term temperature stability In terms of sound insulation, the control unit had some attenuation, but the inclusion of filler materials considerably increased sound insulation capabilities Sawdust and fabric showed the most substantial improvements, highlighting the importance of filler materials in boosting acoustic performance Recommendations Thermal Regulation: Filler materials such as sawdust and fabric exhibit good heat absorption and dissipation properties for applications requiring consistent temperature regulation, such as in buildings or structures exposed to fluctuating environmental conditions Integrating these materials into hollow blocks can help keep indoor temperatures consistent and increase occupant comfort

15. Quality Control: In locations where noise control is critical, such as residential areas or business buildings near busy streets, filler materials such as LDPE plastic and cloth are effective at reducing sound transmission Sound transmission can be significantly reduced by combining these materials into hollow block structures, resulting in a quieter and more serene indoor atmosphere Sound Insulation: In locations where noise control is critical, such as residential areas or business buildings near busy streets, filler materials such as LDPE plastic and cloth are effective at reducing sound transmission. Sound transmission can be significantly reduced by combining these materials into hollow block structures, resulting in a quieter and more serene indoor atmosphere